Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
19 mi (31 km)
Bearing
120.4°
Terrain
BLOCKED
Propagation
51/100
MARGINAL
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
155.7
dB
Gaseous (O₂+H₂O)
2.7
dB
Diffraction loss
60.6
dB
TOTAL PATH LOSS
219.1
dB
Gas rate: 0.0858 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 15.3 g/m³
Power Budget
TX Power
20.0
dBm
(100.0 mW)
TX Ant Gain
30.0
dBi
Feed Loss (×2)
-2.0
dB
EIRP
48.0
dBm
Path Loss (w/FF)
-219.1
dB
RX Ant Gain
30.0
dBi
RX Power
-141.1
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-1.1
dB
Path Weather Avg
Temperature
68.5°F
20.3°C
Dewpoint
64.5°F
18.1°C
T/Td Gap
4.0°F
Abs Humidity
15.3 g/m³
Pressure
991.7 mb
PWAT
41.9 mm
BL Depth
696.0 m
Refrac Gradient
-58.9 N/km
Propagation Factors · 47 GHz
Rain
100
Pressure
70
Refractivity
55
Season
55
Sky Cover
50
Wind
50
T-Td Depression
38
Humidity
29
Time of Day
18
PWAT
15
Atmospheric Profile
HRRR (3 km) Valid 2026-05-10 21:00 UTC 9 path samples| Point | Lat, Lon | Temp | Dewpt | Press | HPBL | PWAT | Ns | dN/dh |
|---|---|---|---|---|---|---|---|---|
| Source | 33.3, -96.7 | 21.1°C | 18.1°C | 991.7 mb | 758.9 m | 42.3 mm | 354.8 | -51.7 |
| 13% | 33.3, -96.7 | 21.1°C | 18.1°C | 991.7 mb | 758.9 m | 42.3 mm | 354.8 | -51.7 |
| 25% | 33.3, -96.7 | 20.0°C | 18.2°C | 995.4 mb | 781.6 m | 42.2 mm | 356.1 | -53.2 |
| 38% | 33.3, -96.6 | 20.0°C | 18.2°C | 995.4 mb | 781.6 m | 42.2 mm | 356.1 | -53.2 |
| Midpoint | 33.3, -96.6 | 20.0°C | 18.2°C | 995.4 mb | 781.6 m | 42.2 mm | 356.1 | -53.2 |
| 63% | 33.2, -96.6 | 20.1°C | 17.9°C | 997.2 mb | 600.2 m | 41.5 mm | 353.7 | -58.9 |
| 75% | 33.2, -96.5 | 20.1°C | 17.9°C | 997.2 mb | 600.2 m | 41.5 mm | 353.7 | -58.9 |
| 88% | 33.2, -96.5 | 20.1°C | 17.9°C | 997.2 mb | 600.2 m | 41.5 mm | 353.7 | -58.9 |
| Destination | 33.2, -96.5 | 20.1°C | 17.9°C | 997.2 mb | 600.2 m | 41.5 mm | 353.7 | -58.9 |
Midpoint vertical profile
17-Hour Propagation Forecast · 47 GHz
→ Steady
Best:
63
at 13:00 UTC
Worst:
34
at 22:00 UTC